Unless you're vertically integrated, manufacturing is incredibly difficult to make money from. The traditional South Asian/East Asian medium sized manufacturer is run by people who put in outsized efforts to the returns. The margins are razor thin in most units, and the competition cut-throat. The units simply won't make money if they're delegated to MBA types, because the true cost of managing the unit is much much higher.

It's actually the perfect small/medium business endeavor in developing countries because of the labor cost arbitrage and economic opportunity. But a typical college educated American entrepreneur will not find it appealing, compared to starting a tech business or running a services business.